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Full text release has been delayed at the author's request until May 04, 2025

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The Variation of Radiative Heat Loss as a Function of Position for an Isothermal Square Twist Origami Radiator

Najeeb, Mohammed Farhan Aziz
http://orcid.org/0009-0003-4016-1837
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1708794831198931

Abstract Details

2024, Master of Science (M.S.), University of Dayton, Aerospace Engineering.
This research introduces an Origami-inspired dynamic spacecraft radiator, capable of adjusting heat rejection in response to orbital variations and extreme temperature fluctuations in lunar environments. The research centers around the square twist origami tessellation, an adaptable geometric structure with significant potential for revolutionizing radiative heat control in space. The investigative involves simulations of square twist origami tessellation panels using vector math and algebra. This study examines both a two-dimensional (2- D), infinitely thin tessellation, and a three-dimensional (3-D), rigidly-foldable tessellation, each characterized by an adjustable closure or actuation angle “φ”. Meticulously analyzed the heat loss characteristics of both the 2D and 3D radiators over a 180-degree range of actuation. Utilizing Monte Carlo Ray Tracing and the concept of “view factors”, the study quantifies radiative heat loss, exploring the interplay of emitted, interrupted, and escaped rays as the geometry adapts to various positions. This method allowed for an in-depth understanding of the changing radiative heat loss behavior as the tessellation actuates from fully closed to fully deployed. The findings reveal a significant divergence between the 2D and 3D square twist origami radiators. With an emissivity of 1, the 3D model demonstrated a slower decrease in the ratio of escaped to emitted rays (Ψ) as the closure/actuation angle increased, while the 2D model exhibited a more linear decline. This divergence underscores the superior radiative heat loss control capabilities of the 2D square twist origami geometry, offering a promising turndown ratio of 4.42, validating the model’s efficiency and practicality for radiative heat loss control. Further exploration involved both non-rigidly and rigidly foldable radiator models. The non-rigidly foldable geometry, initially a theoretical concept, is realized through 3D modeling and physical prototyping, demonstrating effective foldability and radiative heat loss control. The rigidly foldable model, enhanced with sophisticated techniques for increasing 3D height, showed full actuation capabilities in a physical prototype, confirming its practical application potential. The research also extends to derivative geometries such as “Star Twist”, “Sloped-Edge Twist”, “Octa Twist”, and “Min-core Square Twist”. Extensive simulations for these geometries are conducted, exploring their potential for advanced thermal management systems. In conclusion, this research significantly advances the understanding of square twist origami geometry in radiative heat loss control. The study highlights the distinct behavior and advantages of origami-based designs over conventional radiators, demonstrating efficient thermal management capabilities and adaptability for space exploration. These findings illuminate the path toward dynamic heat rejection in future space missions, powered by origami radiator technology, and open avenues for further optimization and enhanced thermal efficiency.
Rydge Mulford (Advisor)
315 p.
Acoustics; Aerospace Engineering; Aerospace Materials; Alternative Energy; Aquatic Sciences; Artificial Intelligence; Astronomy; Astrophysics; Atmosphere; Atmospheric Sciences; Automotive Engineering; Automotive Materials; Biomechanics; Biophysics; Cinematography; Civil Engineering; Communication; Computer Engineering; Design; Earth; Educational Software; Educational Technology; Educational Tests and Measurements; Educational Theory; Electrical Engineering; Engineering; Environmental Engineering; Environmental Science; Experiments; Fluid Dynamics; Geophysics; Geotechnology; High Temperature Physics; Industrial Engineering; Information Systems; Information Technology; Instructional Design; Marine Geology; Materials Science; Mathematics; Mathematics Education; Mechanical Engineering; Mechanics; Mineralogy; Mining Engineering; Naval Engineering; Nuclear Engineering; Nuclear Physics; Ocean Engineering; Petroleum Engineering; Quantum Physics; Radiation; Radiology; Range Management; Remote Sensing; Robotics; Solid State Physics; Sustainability; Systems Design; Theoretical Physics
Origami-inspired radiators; Spacecraft thermal management; Radiative heat loss control; Lunar environment thermal regulation; Adaptive thermal control systems; Square twist origami tessellation; Monte Carlo Ray Tracing; Deployable radiator systems; Thermal management in space exploration; Emissivity and thermal emission; Vector math in thermal simulations

Recommended Citations

Citations

  • Najeeb, M. F. A. (2024). The Variation of Radiative Heat Loss as a Function of Position for an Isothermal Square Twist Origami Radiator [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1708794831198931

    APA Style (7th edition)

  • Najeeb, Mohammed Farhan Aziz. The Variation of Radiative Heat Loss as a Function of Position for an Isothermal Square Twist Origami Radiator. 2024. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1708794831198931.

    MLA Style (8th edition)

  • Najeeb, Mohammed Farhan Aziz. "The Variation of Radiative Heat Loss as a Function of Position for an Isothermal Square Twist Origami Radiator." Master's thesis, University of Dayton, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1708794831198931

    Chicago Manual of Style (17th edition)

dayton1708794831198931
© 2024, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.